Function HexToHSB

randomColor.js:542–562

(hex)

  }

  function HexToHSB(hex) {
    hex = hex.replace(/^#/, "");
    hex = hex.length === 3 ? hex.replace(/(.)/g, "$1$1") : hex;

    var red = parseInt(hex.substr(0, 2), 16) / 255,
      green = parseInt(hex.substr(2, 2), 16) / 255,
      blue = parseInt(hex.substr(4, 2), 16) / 255;

    var cMax = Math.max(red, green, blue),
      delta = cMax - Math.min(red, green, blue),
      saturation = cMax ? delta / cMax : 0;

    switch (cMax) {
      case red:
        return [60 * (((green - blue) / delta) % 6) || 0, saturation, cMax];
      case green:
        return [60 * ((blue - red) / delta + 2) || 0, saturation, cMax];
      case blue:
        return [60 * ((red - green) / delta + 4) || 0, saturation, cMax];
    }
  }

  function HSVtoHSL(hsv) {
    var h = hsv[0],